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Gut microbe-derived extracellular vesicles induce insulin resistance, thereby impairing glucose metabolism in skeletal muscle

Title
Gut microbe-derived extracellular vesicles induce insulin resistance, thereby impairing glucose metabolism in skeletal muscle
Authors
ChoiY.KwonKimD.-K.JeonJ.JangS.C.WangT.BanM.M.-H.S.G.M.-S.C.S.JeeY.-K.GhoY.S.RyuS.H.
Ewha Authors
김윤근김민혜
SCOPUS Author ID
김윤근scopusscopus; 김민혜scopus
Issue Date
2015
Journal Title
Scientific Reports
ISSN
2045-2322JCR Link
Citation
vol. 5
Publisher
Nature Publishing Group
Indexed
SCI; SCIE; SCOPUS WOS scopus
Abstract
Gut microbes might influence host metabolic homeostasis and contribute to the pathogenesis of type 2 diabetes (T2D), which is characterized by insulin resistance. Bacteria-derived extracellular vesicles (EVs) have been suggested to be important in the pathogenesis of diseases once believed to be non-infectious. Here, we hypothesize that gut microbe-derived EVs are important in the pathogenesis of T2D. In vivo administration of stool EVs from high fat diet (HFD)-fed mice induced insulin resistance and glucose intolerance compared to regular diet (RD)-fed mice. Metagenomic profiling of stool EVs by 16S ribosomal DNA sequencing revealed an increased amount of EVs derived from Pseudomonas panacis (phylum Proteobacteria) in HFD mice compared to RD mice. Interestingly, P. panacis EVs blocked the insulin signaling pathway in both skeletal muscle and adipose tissue. Moreover, isolated P. panacis EVs induced typical diabetic phenotypes, such as glucose intolerance after glucose administration or systemic insulin injection. Thus, gut microbe-derived EVs might be key players in the development of insulin resistance and impairment of glucose metabolism promoted by HFD.
DOI
10.1038/srep15878
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의학전문대학원 > 의학과 > Journal papers
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